In animation, the next best thing to a grand vision is crack comic timing. The third chapter in the saga of Alex the lion (Ben Stiller) and his Central Park Zoo pals now nostalgic for New York after their foray into Africa has timing up the wazoo. It's there in a (literally) over-the-top chase through the skies of Monte Carlo, in the grouchy fun of a troupe of Euro circus animals our heroes hook up with, and in bits like Marty the zebra (Chris Rock) singing a circus jingle inspired by his psychedelic Afro wig. The story in Madagascar 3 is functional, but the antically civilized spirit is infectious. B+

